Mimikyu #SM29 from SM Black Star Promos is a reverse holo promo card that currently sells for about $5.01 ungraded, with graded copies ranging from $10.00 at grade 7 to $58.94 at grade 10. A grade 10 copy sells for around $58.94, about 12× the $5.01 raw price, so high-grade copies are worth grading.